VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Thu Aug 01 2002 - 20:00:51 CDT

Hi Michael,
  I haven't encountered this problem with the 9.x versions of NetPBM, but
I downloaded NetPBM 10.6 today and I'll see if I have the same problem you
describe. You said you're running the latest version, so I assume you've
got 10.6 then?? Please let me know the exact version, otherwise we may
waste valuable time trying to reproduce the problem with a different
version of the code.

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Thu, Aug 01, 2002 at 03:07:25PM -0400, mimurra3 wrote:
> All,
>
> I am having issues getting vmdmovie to create an mpeg file. The script seems
> to run just fine. It creates the rgb files and then converts them to ppm
> without problems. However, ppmtompeg creates an mpeg file of zero size. I
> saw a previous message to the list with the same problem but we are the most
> recent version of Netppm and version 1.7.1 of VMD under Linux.
>
> I changed the script to keep the rgb and ppm files. I looked at the ppm files
> using GIMP and they definitely contain pictures. When I tried running
> ppmtompeg from the command line using the script created by VMD I don't get an
> error message. Instead, it outputs only
>
> MPEG ENCODER STATS (1.5b)
> ------------------------
> TIME STARTED: Thu Aug 1 13:06:22 2002
> MACHINE: unknown
> FIRST FILE: /home/mimurra3/movie_stuff/test/untitled.0000.ppm
> LAST FILE: /home/mimurra3/movie_stuff/test/untitled.0179.ppm
> PATTERN: ibbpbbpbbpbbpbb
> GOP_SIZE: 15
> SLICES PER FRAME: 1
> RANGE: +/-32
> PIXEL SEARCH: HALF
>
> and again creates an empty .mpg file. Any help would be greatly appreciated.
>
> thanks,
> Mike
>
> --------------------------
> Michael Murray
> Virginia Polytechnic Institute and State University
> Biochemistry Department
> 201 Engel Hall
> 

-- 
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